5. To verify the routes calculated by the OSPF protocol, enter:
show ip ospf route
6.
To verify that OSPF learned routes are in the forwarding table, enter:
show ip route
7. To verify redistributed routes in the local OSPF database, enter:
show ip ospf database
Troubleshooting RIP over GRE/IPIP tunnels
This section describes how to troubleshoot RIP over GRE/IP-IP encapsulated tunnels. Note
that with tunnel routing, you must configure an IP address on the tunnel interface, and you
must enable routing for both the tunnel interface and the interface on which the tunnel is
configured.
RIP uses the tunnel interface name as the next hop for the routes learned over the
tunnel interface.
Procedure steps
1. To display the IP interfaces, enter:
show ip interfaces brief
2. To display the RIP enabled interfaces, enter:
show ip rip interface
Verify that RIP is enabled on the interface and on the tunnel.
3. To display RIP neighbors, enter:
show ip protocols rip
This command displays all protocol-related information for RIP, including networks
enabled with RIP, and the neighbors that are providing routes to this router.
4. To display the RIP database, enter:
show ip rip database
This command displays all RIP-learned routes.
5. To display the RIP learned routes in the forwarding route table, enter:
show ip route
6. To display redistributed routes in the local RIP database, enter:
show ip rip database
Troubleshooting RIP over GRE/IPIP tunnels
Troubleshooting August 2013 223
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